When should all controls be tested by the operator, as per ASME B30.3?

All controls should be tested by the operator at the start of a new shift according to ASME B30.3. This procedure is crucial as it ensures that all crane functions are operational and that any issues can be identified and addressed before the crane is put into use. Performing this check at the beginning of each shift helps in maintaining a standard of safety, as operators can become familiar with the crane's controls and confirm that everything is functioning correctly. This initial test acts as a baseline for that particular work period, providing the operator with confidence in the equipment’s reliability for the tasks ahead.

Testing controls at different intervals, such as every hour or after major repairs, can be important in specific circumstances but does not replace the need for a thorough check at the start of each shift. Similarly, changes in weather conditions can impact crane operations, but they do not dictate routine control testing, which is fundamentally established as a shift start requirement. Thus, the emphasis on initiating operations with a controls check aligns with safety protocols and operational efficiency in crane management.